EP0763687B1 - Threaded coupling - Google Patents
Threaded coupling Download PDFInfo
- Publication number
- EP0763687B1 EP0763687B1 EP96202580A EP96202580A EP0763687B1 EP 0763687 B1 EP0763687 B1 EP 0763687B1 EP 96202580 A EP96202580 A EP 96202580A EP 96202580 A EP96202580 A EP 96202580A EP 0763687 B1 EP0763687 B1 EP 0763687B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- flange
- annular groove
- rim
- axial
- sealing ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
- F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
Definitions
- the invention relates to a threaded coupling according to the preamble of Claim 1, in particular for use in pharmaceutical and / or Food industry is suitable. Although not limited to this, the invention provides actually an improvement on the generally known coupling according to DIN 11851.
- a coupling of this type is, for example, in German Patent 42 01 535 mentioned.
- the end faces of the flanges are the two Provide pipe parts with axial and radial stop surfaces so that the flanges are secure can interlock, with a cavity for pinching the sealing ring is released.
- the cavity consists of an annular chamber, which by means of a narrower radial, annular slot with the inner passage of the two Pipe parts of the coupling are connected.
- This sealing ring consists of one Part of the body that can be accommodated in the chamber mentioned, and from one of them radially inward lip, which with a predetermined compression lies in the slot mentioned.
- the lip is dimensioned so that it follows the Squeeze the slot completely and flat against the adjacent ones Connects inner walls of the inner passage of the pipe parts.
- This well-known clutch has a number of disadvantages which do not meet the high demands of today be placed on aseptic couplings.
- the first disadvantage is that it may not be accurate aligned pipe parts can be difficult to connect. The one with closer Tolerance parts to be pushed into each other can easily get stuck, so that there are none There is certainty that the sealing ring is clamped in the right way.
- Another disadvantage is that the rubber over the entire length of the lip in a relative long distance must be compressed, with a lot of material must and the lip is pressed radially inwards to the inner passage.
- the rubber-like material of the sealing ring generally has a five to thermal expansion seven times greater than the surrounding stainless steel of the coupling and is easily expanded into the inner channel of the body when expanded by high temperatures Pipe out the pipe parts.
- the object of the invention is therefore to provide a threaded coupling of the type mentioned create, in which the above disadvantages in a simple and convenient manner can be avoided and which therefore meets today's requirements for aseptic Clutches are made.
- the lip of the sealing ring is close to the free end most compressed, the shape of the slot ensures that the Lip is pressed radially outwards and therefore does not have the tendency to outside To protrude sidewalls of the passageways.
- FIG. 1 shows a threaded coupling according to the invention, which consists of a first tube part 1 and a second pipe part 2, which is connected to one another by means of a union nut 3 are connected.
- the pipe parts 1, 2 each have an inner axial passage with the same Diameter, the passages aligned with each other and through a side wall 1a or 2a are limited.
- the first tube part 1 has at one end a peripheral flange 4 on the front side along the outer circumference with an edge 5 protruding in the axial direction is.
- This edge 5 has a thread on the outer circumference for fastening the Union nut 3.
- the inner wall 6 of this edge 5 diverges conically.
- At the On the inside of the edge 5 there is an annular groove 7 in the end face of the flange 4 rectangular cross-section attached, which borders on the edge 5, so that the Outer wall of the annular groove 7 gradually into the inner wall 6 diverging towards the outside of edge 5 passes.
- the second pipe part 2 is at the end facing the first pipe part 1 with a flange 9 provided that an axially protruding on the end face along its outer circumference Has edge 10.
- This edge 10 has a cylindrical outer surface 11 with one Diameter that this edge 10 with narrow tolerances in the annular groove 7 of the end face of the flange 4 of the first pipe part 1 can be accommodated.
- the conical surface 6 serves as a so-called search edge, which the Intermeshing the two pipe parts 1 and 2 should facilitate.
- the two tube parts 1, 2 a space free between them, through the annular groove 7 and one of these annular groove 7 radially inwardly extending slot 12 is formed, which is in open connection with the axial passage of the two pipe parts 1, 2 is.
- Sealing ring 8 is added, which has a radially inwardly extending lip 8a, which is located in slot 12, the free end of this lip 8a flat against the side walls 1a and 2a of the axial passages.
- the slot 12 is through the end face 13 located within the annular groove 7 of the Flange 4 on the one hand and through the end face 14 located within the edge 10 of the Flange 9 formed on the other hand.
- the Surface 13 perpendicular to the axial direction of the pipe parts 1, 2, while the surface 14 somewhat conically converged towards the outside.
- This surface 14 therefore includes a surface 13 An angle of approximately 5 °, so that the slot 12 is somewhat narrower radially inwards becomes.
- the sealing ring 8 has a Z-shaped configuration and, as already said, expands from the annular groove 7 to the side walls 1a and 2a of the two pipe parts 1, 2.
- the sealing ring 8 by a step-shaped thickening 10a in the Inner wall of the edge 10 held.
- the lip 8a of the sealing ring 8 is in one previously determined dimensions compressed between the walls 13 and 14. Because the Lip 8a has a constant thickness, the lip 8a becomes strongest at the free end pressed together.
- the conical shape of the surface 14 ensures that the lip 8a does not is pressed only axially but also radially outwards. As a result, the sealing ring 8 do not tend to protrude outside the side walls 1a and 2a. Because that Squeezing the lip 8a mainly happens at the point where the maximum sealing is desired, only a relatively slight deformation of the lip 8a required with a minimum amount of material being displaced and with the displacement then takes place radially outwards.
- the sealing ring 8 is in the vicinity of the radially outer part in the conical surface 14 adjacent surface provided with a recess 15, which serves to the outside to take up crowded material.
- FIG. 2 shows a variant of the embodiment in FIG. 1, wherein the same or functionally the same parts are designated with the same reference numerals.
- the axially expanding edge 10 of the flange 9 is through a loose centering ring 10 'replaced in the same way as in Figure 1 in the annular groove 7th engages and holds the sealing ring 8 therein.
- this centering ring 10 ' At the end of the flange 9 facing side, this centering ring 10 'has a conical axial stop surface 16 which cooperates with the surface 14 of the flange 9, and a conical radial Stop surface 17 which is in contact with the conical outer surface 18 of the flange 9 cooperates.
- This embodiment is chosen to match existing ones To be able to convert couplings according to DIN 11851.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints With Pressure Members (AREA)
- Dowels (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
- Gasket Seals (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine Gewindekupplung nach dem Oberbegriff des
Anspruchs 1, die insbesondere zur Anwendung in der pharmazeutischen und/oder
Nahrungsmittelindustrie geeignet ist. Obgleich nicht darauf beschrankt, stellt die Erfindung
tatsächlich eine Verbesserung der allgemein bekannten Kupplung nach DIN 11851 dar.The invention relates to a threaded coupling according to the preamble of
Eine Kupplung dieser Art ist zum Beispiel in der deutschen Patentschrift 42 01 535 erwähnt. Bei dieser bekannten Kupplung sind die Stirnflächen der Flansche der beiden Rohrteile mit axialen und radialen Anschlagflächen versehen, so daß die Flansche fest ineinander greifen können, wobei ein Hohlraum für das Einklemmen des Dichtungsringes freigelassen wird. Der Hohlraum besteht aus einer ringförmigen Kammer, die mittels eines schmaleren radialen, ringförmigen Schlitzes mit dem inneren Durchgang der beiden Rohrteile der Kupplung in Verbindung steht. Dieser Dichtungsring besteht dabei aus einem Körperteil, das in der genannten Kammer aufgenommen werden kann, und aus einer davon radial nach innen verlaufenden Lippe, die mit einer vorher bestimmten Zusammenpressung im genannten Schlitz liegt. Die Lippe ist so dimensioniert, daß sie nach dem Zusammendrücken den Schlitz vollständig ausfüllt und dabei flach an die angrenzenden Innenwände des inneren Durchgangs der Rohrteile anschließt. Diese bekannte Kupplung hat eine Anzahl Nachteile, durch die sie nicht den hohen Anforderungen genügt, die heute an aseptische Kupplungen gestellt werden. Der erste Nachteil ist, daß eventuell nicht genau fluchtende Rohrteile schwierig miteinander verbunden werden können. Die mit enger Toleranz ineinander zu schiebenden Teile können sich leicht festklemmen, so daß es keine Sicherheit gibt, daß der Dich-tungsring in der richtigen Weise eingeklemmt wird. Ein weiterer Nachteil ist, daß das Gummi über die ganze Länge der Lippe in einer relativ großen Entfernung zusammengedrückt werden muß, wobei viel Material versetzt werden muß und die Lippe radial zum inneren Durchgang nach innen gedrückt wird. Außerdem hat das gummiähnliche Material des Dichtungsringes im allgemeinen eine fünf bis siebenmal größere Wärmeausdehnung als der sie umgebende rostfreie Stahl der Kupplung und wird bei Ausdehnung durch hohe Temperaturen bequem in den inneren Kanal der Rohrteile ausstülpen.A coupling of this type is, for example, in German Patent 42 01 535 mentioned. In this known coupling, the end faces of the flanges are the two Provide pipe parts with axial and radial stop surfaces so that the flanges are secure can interlock, with a cavity for pinching the sealing ring is released. The cavity consists of an annular chamber, which by means of a narrower radial, annular slot with the inner passage of the two Pipe parts of the coupling are connected. This sealing ring consists of one Part of the body that can be accommodated in the chamber mentioned, and from one of them radially inward lip, which with a predetermined compression lies in the slot mentioned. The lip is dimensioned so that it follows the Squeeze the slot completely and flat against the adjacent ones Connects inner walls of the inner passage of the pipe parts. This well-known clutch has a number of disadvantages which do not meet the high demands of today be placed on aseptic couplings. The first disadvantage is that it may not be accurate aligned pipe parts can be difficult to connect. The one with closer Tolerance parts to be pushed into each other can easily get stuck, so that there are none There is certainty that the sealing ring is clamped in the right way. On Another disadvantage is that the rubber over the entire length of the lip in a relative long distance must be compressed, with a lot of material must and the lip is pressed radially inwards to the inner passage. Moreover the rubber-like material of the sealing ring generally has a five to thermal expansion seven times greater than the surrounding stainless steel of the coupling and is easily expanded into the inner channel of the body when expanded by high temperatures Pipe out the pipe parts.
Aufgabe der Erfindung ist es daher, eine Gewindekupplung der eingangs genannten Art zu schaffen, bei der die obengenannten Nachteile auf einfache und zweckmäßige Weise vermieden werden und die dadurch den heutigen Anforderungen genügt, die an aseptische Kupplungen gestellt werden.The object of the invention is therefore to provide a threaded coupling of the type mentioned create, in which the above disadvantages in a simple and convenient manner can be avoided and which therefore meets today's requirements for aseptic Clutches are made.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.This object is achieved by the features of
Auf diese Weise wird die Lippe des Dichtungsringes in der Nähe des freien Endes am meisten zusammengedrückt, wobei die Formgebung des Schlitzes dafür sorgt, daß die Lippe radial nach außen gedrückt wird und daher nicht die Neigung hat, außerhalb der Seitenwände der Durchgänge auszustülpen.In this way, the lip of the sealing ring is close to the free end most compressed, the shape of the slot ensures that the Lip is pressed radially outwards and therefore does not have the tendency to outside To protrude sidewalls of the passageways.
Die Unteransprüche 2 bis 4 geben weitere zweckmäßige Details und Ausbildungen der
Erfindung wieder, wobei die Ausführungsform des Anspruchs 4 besonders günstig ist, weil
bereits existierende Kupplungen nach DIN 11851 einfach angepaßt werden können, indem
der bestehende Dichtungsring durch die Kombination von Zentrierring und Dichtungsring
nach der vorliegenden Erfindung ersetzt wird.The
Die Erfindung wird an Hand der beigefügten Zeichnungen erläutert, in denen
Figur 1 zeigt eine Gewindekupplung nach der Erfindung, die aus einem ersten Rohrteil 1
und einem zweiten Rohrteil 2 besteht, die mittels einer Überwurfmutter 3 miteinander
verbunden sind. Die Rohrteile 1,2 haben je einen inneren axialen Durchgang mit gleichem
Durchmesser, wobei die Durchgänge miteinander fluchten und durch eine Seitenwand 1a
beziehungsweise 2a begrenzt sind.FIG. 1 shows a threaded coupling according to the invention, which consists of a
Das erste Rohrteil 1 hat an einem Ende einen Umfangsflansch 4, der an der Stirnseite
entlang dem Außenumfang mit einem in axialer Richtung überstehenden Rand 5 versehen
ist. Dieser Rand 5 hat am Außenumfang ein Gewinde für die Befestigung der
Überwurfmutter 3. Die Innenwand 6 dieses Randes 5 divergiert kegelförmig. An der
Innenseite des Randes 5 ist in der Stirnfläche des Flansches 4 eine Ringnut 7 mit
rechtwinkeligem Querschnitt angebracht, der an den Rand 5 grenzt, so daß die
Außenwand der Ringnut 7 allmählich in die nach außen hin divergierende Innenwand 6
des Randes 5 übergeht.The
Das zweite Rohrteil 2 ist am zum ersten Rohrteil 1 gerichteten Ende mit einem Flansch 9
versehen, der an der Stirnseite entlang deren Außenumfang einen axial überstehenden
Rand 10 hat. Dieser Rand 10 hat eine zylindrische Außenoberfläche 11 mit einem solchen
Durchmesser, daß dieser Rand 10 mit engen Toleranzen in der Ringnut 7 der Stirnfläche
des Flansches 4 des ersten Rohrteiles 1 aufgenommen werden kann. Dabei liegt die
Außenoberfläche 11 an der Außenwand der Ringnut 7 an, während die Stirnfläche des
Randes 10 am Boden der Ringnut 7 anliegt. Auf diese Weise sind die beiden Rohrteile 1,
2 sowohl in axialer als auch in radialer Richtung in einer festen Position in bezug
aufeinander fixiert. Die kegelige Fläche 6 dient dabei als sogenannter Suchrand, der das
Ineinanderaufnehmen der beiden Rohrteile 1 und 2 erleichtern soll.The
Wie in Figur 1 deutlich sichtbar ist, lassen die beiden gegeneinanderliegenden Rohrteile 1,
2 zwischen sich einen Raum frei, der durch die Ringnut 7 und einen sich von diesen Ringnut
7 radial nach innen ausdehnenden Schlitz 12 gebildet wird, der in offener Verbindung mit
dem axialen Durchgang der beiden Rohrteile 1, 2 steht. In diesem Raum ist ein
Dichtungsring 8 aufgenommen, der eine radial nach innen verlaufende Lippe 8a aufweist,
die im Schlitz 12 gelegen ist, wobei das freie Ende dieser Lippe 8a flach an die Seitenwände
1a und 2a der axialen Durchgänge anschließt. As can be clearly seen in FIG. 1, the two
Der Schlitz 12 wird durch die innerhalb der Ringnut 7 gelegene Stirnfläche 13 des
Flansches 4 einerseits und durch die innerhalb des Randes 10 gelegene Stirnfläche 14 des
Flansches 9 andererseits gebildet. In der wiedergegebenen Ausführungsform steht die
Fläche 13 senkrecht zur Axialrichtung der Rohrteile 1, 2, während die Fläche 14 etwas
kegelig nach außen hin konvergiert. Diese Fläche 14 schließt daher mit der Fläche 13 einen
Winkel von ungefähr 5° ein, so daß der Schlitz 12 radial nach innen hin etwas schmaler
wird.The
Der Dichtungsring 8 hat eine Z-förmige Konfiguration und dehnt sich, wie bereits gesagt,
von der Ringnut 7 bis zu den Seitenwänden 1a und 2a der beiden Rohrteile 1, 2 aus. Innerhalb
der Ringnut 7 wird der Dichtungsring 8 durch eine stufenförmige Verdickung 10a in der
Innenwand des Randes 10 festgehalten. Die Lippe 8a des Dichtungsringes 8 wird in einem
vorher bestimmten Maße zwischen den Wänden 13 und 14 zusammengedrückt. Weil die
Lippe 8a eine gleichbleibende Stärke hat, wird die Lippe 8a am freien Ende am stärksten
zusammengedrückt. Die kegelige Form der Fläche 14 sorgt dafür, daß die Lippe 8a nicht
nur axial sondern auch radial nach außen gedrückt wird. Dadurch wird der Dichtungsring 8
nicht die Neigung haben, außerhalb der Seitenwände 1a und 2a auszustülpen. Weil das
Zusammendrücken der Lippe 8a in der Hauptsache an der Stelle geschieht, wo gerade die
größte Abdichtung erwünscht ist, ist nur eine relativ geringe Deformierung der Lippe 8a
erforderlich, wobei eine Mindestmaterialmenge versetzt wird und wobei die Versetzung
dann noch radial nach außen hin stattfindet.The
Der Dichtungsring 8 ist in der Nähe des radial äußeren Teiles in der kegeligen Fläche 14
anliegenden Fläche mit einer Aussparung 15 versehen, die dazu dient, das nach außen
gedrängte Material aufzunehmen.The sealing
In Figur 2 ist eine Variante der Ausführungsform der Figur 1 wiedergegeben, wobei
dieselben oder funktionell dieselben Teile mit denselben Bezugsziffern bezeichnet sind. In
dieser Ausführungsform ist der sich axial ausdehnende Rand 10 des Flansches 9 durch
einen losen Zentrierring 10' ersetzt, der in derselben Weise wie in Figur 1 in die Ringnut 7
greift und den Dichtungsring 8 darin festhält. An der zur Stirnseite des Flansches 9
zugewandten Seite hat dieser Zentrierring 10' eine kegelige axiale Anschlagfläche 16, die
mit der Fläche 14 des Flansches 9 zusammenwirkt, und eine kegelige radiale
Anschlagfläche 17, die mit der kegeligen Außenoberfläche 18 des Flansches 9
zusammenwirkt. Diese Ausführungsform ist so gewählt, um bereits bestehende
Kupplungen nach DIN 11851 umbauen zu können. Bei diesen bestehenden Kupplungen
liegt in der Ringnut 7 ein axial hinausragender Dichtungsring, wobei der Schlitz 12 einen toten
Raum bildet. Indem nur dieser Dichtungsring durch die Kombination des Zentrierringes 10'
mit dem dazu passenden Dichtungsring 8, 8a ersetzt wird, erhält man eine Kupplung in
Übereinstimmung mit der vorliegenden Erfindung, wobei die beiden Rohrteile 1,2 in bezug
aufeinander fixiert sind und es keine toten Räume gibt.FIG. 2 shows a variant of the embodiment in FIG. 1, wherein
the same or functionally the same parts are designated with the same reference numerals. In
In this embodiment, the axially expanding
Claims (4)
- Threaded coupling, particularly for use in the food industry, comprising a first tubular part (1) with an axial passage delimited by a sidewall (la), the tubular part (1) having, at the free end, a flange (4) which has an axially projecting rim (5) at the front face along the tubular periphery and which has an annular groove (7) bordering on the inner side of this rim (5), and held within it, a sealing ring (8) made of a suitable rubberlike material, and comprising a second tubular part (2) with an axial passage delimited by a sidewall (2a), the second tubular part (2) having, at the free end, a flange (9) whose front face lays against the front face of flange (4) of the first tubular part (1) , the front faces being provided with axial and radial abutment faces to locate the two tubular parts (1, 2) relative to one another, the flanges (4, 9) being connected together by means of a ring nut (3) which is screwed on the outer circumference of the flange (4) and which fits behind the flange (9) in order to press the two flanges (4, 9) against each other, the sealing ring (8) being enclosed and, in the position in which the two flanges (4, 9) adhere to one another, there being an annular slit (12) which extends from the annular groove (7) to the inner passages of both tubular parts (1, 2), the sealing ring (8) being provided with a radial lip (8a) which is arranged in this slit (12) and which is compressed to a predetermined extent in order to provide the desired seal, characterised in that slit (12) becomes gradually narrower from the annular groove (7) to the inner passages of the tubular parts (1, 2), lip (8a) of the sealing ring (8) having a constant thickness in unloaded state and its free end lying flush with the inner walls (1a, 2a) of the inner axial passages of the tubular parts (1, 2), and the inside wall (6) of rim (5) converges inwardly conically and merges into an axial outer wall of the annular groove (7), and flange (9) of the second tubular part (2) has on its front face along the outer periphery an axially projecting rim (10), the cylindrical outer surface (11) of which is able to rest against the outer wall of the annular groove (7) with a tight tolerance while the free end of rim (10) rests against the bottom of annular groove (7) .
- Threaded coupling according to claim 1, characterised in that the axial rim (10) of flange (9) is provided with a step-like thickened portion (10a) to hold the sealing ring (8) secure in the annular groove (7), and front face (14) of flange (9) which is situated within rim (10) and which delimits slit (12) converges in a conical way from the inner side of rim (10).
- Threaded coupling according to claim 2, characterised in that front face (14) forms an angle of 4° to 6° with an opposing front face (13) of flange (4).
- Threaded coupling according to claim 1, characterised in that axial rim (10) of flange (4) is in the form of a locating ring (10') which with the outer periphery rests against the outer wall of annular groove (7) and with the one end rests against the bottom of annular groove (7), the locating ring (10') having on the side remote from flange (4) a radial abutment face (17) and an axial abutment face (16) which co-operate with corresponding faces (14, 18) of flange (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL1001225 | 1995-09-18 | ||
| NL1001225 | 1995-09-18 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0763687A1 EP0763687A1 (en) | 1997-03-19 |
| EP0763687B1 true EP0763687B1 (en) | 2001-01-17 |
Family
ID=19761587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96202580A Expired - Lifetime EP0763687B1 (en) | 1995-09-18 | 1996-09-18 | Threaded coupling |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0763687B1 (en) |
| AT (1) | ATE198783T1 (en) |
| DE (1) | DE59606337D1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2963959B1 (en) * | 2010-08-18 | 2013-08-23 | Snecma | SEALED CONNECTION DEVICE, PREFERABLY FOR SPACE LAUNCHER |
| CN115930660B (en) * | 2023-02-21 | 2023-07-07 | 广东览讯科技开发有限公司 | Pipeline fastening connecting piece, heat exchanger and closed cooling tower |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2780483A (en) * | 1953-03-30 | 1957-02-05 | Ladish Co | Sealed joint for pipes having conical tapered interfaces |
| FR1373072A (en) * | 1963-07-23 | 1964-09-25 | Antar | Welding connection |
| DE3126755A1 (en) * | 1981-07-07 | 1983-01-27 | Leonhard Schleicher Südmo-Armaturenfabrik GmbH, 7081 Riesbürg | Screwed pipe connection, in particular for the pharmaceutical industry |
| DE8610109U1 (en) * | 1986-04-14 | 1986-10-16 | KCS Dichtungstechnik GmbH, 5042 Erftstadt | Sealing ring |
| US4861076A (en) * | 1988-04-13 | 1989-08-29 | Newman Sanitary Gasket Company | Gasket for sanitary pipe fittings |
| FR2642138B3 (en) * | 1989-01-20 | 1991-01-11 | Conchon Michel | IMPROVED WELDING FITTING |
| DE4201535A1 (en) | 1992-01-22 | 1993-07-29 | Apv Rosista Gmbh | Flange coupling with aseptic region and elastic seal - has shaped seal seating to compress seal for flush alignment with pipe walls. |
| DE29501054U1 (en) * | 1995-01-24 | 1995-03-02 | Südmo Schleicher AG, 73469 Riesbürg | Detachable pipe connection, preferably for sterile and particle-free pipe systems |
-
1996
- 1996-09-18 AT AT96202580T patent/ATE198783T1/en active
- 1996-09-18 DE DE59606337T patent/DE59606337D1/en not_active Expired - Fee Related
- 1996-09-18 EP EP96202580A patent/EP0763687B1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE59606337D1 (en) | 2001-02-22 |
| EP0763687A1 (en) | 1997-03-19 |
| ATE198783T1 (en) | 2001-02-15 |
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